title: PCBs: regulatory history and analytical problems.
mesh_terms: D000818:Animals; D004785:Environmental Pollutants / Q000032:analysis; D006801:Humans; D007878:Legislation as Topic; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000633:toxicity
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls